Are you talking about car or pickup? If it a car, it is a closed drive shaft. This is the swap I'd like to do in a year or two. I talked to the guy at Buffalo enterprises, their web site is pretty short, as is their cataloge, but they have all the stuff you'll need. When I called him, He went into great detail of how to do it and every thing. Very knowledgeable. I'd give him a call at 360-652-7684. He says this is a common and easy swap with good city and not bad highway running speeds if you get the right combo of gears and gearing. Check with him, super friendly and easy to talk to.
